Published in American Fern Journal, in 1950, in volume 40, pages 16-21

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Published in American Fern Journal, in 1950, in volume 40, pages 21-32

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Published in American Fern Journal, in 1950, in volume 40, pages 32-41

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Published in American Fern Journal, in 1950, in volume 40, pages 69-74

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Published in American Fern Journal, in 1950, in volume 40, pages 213-225

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Published in American Fern Journal, in 1950, in volume 40, issue 1, pages 118

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Published in American Fern Journal, in 1950, in volume 40, issue 1, pages 132

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Published in American Fern Journal, in 1950, in volume 40, issue 2, pages 174

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Published in American Fern Journal, in 1950, in volume 40, issue 2, pages 178

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Published in American Fern Journal, in 1950, in volume 40, issue 3, pages 201

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Published in American Fern Journal, in 1950, in volume 40, issue 3, pages 226

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Published in American Fern Journal, in 1950, in volume 40, issue 4, pages 241

Created: 2017-04-23, modified: 2017-04-23